Ozone-generator



E. L. JOSEPH.

OZONE GENERATOR.

APPLICATION FILED JULY 19.1920.

Patented Feb. 15,1921.

3 SHEETSSHEET I.

E. L. JOSEPH.

OZONE GENERATOR.

APPLICATION FILED JULY 19,-1920.

Patented 15, 1921.'

iii

H My

E. L. JOSEPH. lOZONE GENERATOR.

APPLICATION FILED JULY I9, 1920. 1,368,560. Patented Feb. 15,1921.

3 SHEETS-SHEET 3.

ira err EDWARD LIONEL JDSEPH, OF WESTMINSTER, DDNDON, ENGLAND.

OZONE-GENERATOR.

Be it known that 1,

Westminster and county'ot London, ng-- land, have invented certa n new and'useful Improvements in Ozone-Generators, of

which the following is a specification.

This invention relates to ozone generators of the general type wherein each electrode consists of a metallic sheet (in the form of wire gauze, for example), and the electrodes of a pair having opposite polarities extend inparallel planes and are separated,

by a sheet ofdielectric material (mica for example), while the stream of air, oxygen, or other gaseous mixture (all of which will hereinafter be referred to as a1r), which is to be ozonized, is caused to pass over the electrodes, whereof aseries. of pairs may be employed to act upon tl stream either simultaneously or 1n success n. In one known arrangement of such a sigries of parts of electrodes the electrodes of opposite polarities alternate with one another in parallel planes throughout the series a dielee tric sheet being interposed between each two adjacent electrodes, and the entire assemblage of electrodes and sheets of dielectric" is clamped together, the ,arrangement'and size of the electrodes relatively to the size of the dielectric sheets being such that a portion ofeach electrode projects in one direction or the other according to its polarity, beyond the corresponding edges of'the adjacent dielectric sheets, and such projecting portions have passed therethrough rods in electrical connection therewith which serves to lead thereto or therefrom electric current of appropriate polarity, while the air is caused to pass over all the electrodes in parallel.

It is to be observed that the eficiency (i. e., yield per kilowatt) of an ozone gen erator, more especially in cases where a highly concentrated product is required, is dependent upon the degree of intimacy of contact between the electrodes and the; air which is passed thereover during the ozonizing process. But, the closer the intimacy of contact, the greater is the necessity for passing the air as rapidly as possible over the electrodes so as toobviate an excessive rise of temperature, with consequent disintegration of the ozone produced; and the present invention has for its object to pro-,

vide animproved ozgne generator of the k1nd ust referred" to, so constructed as to pernnt of a greater production of ozone, relatively to the power consumed or the quantity of air passedthrough the apparatus, being LObtfllIlGd than with constructions hitherto in use.

Specification of Letters Patent. Patemted Feb, 315, 1921; i Application filed July 19, 1920. .Seria'l No. 397,366; I

A further object of the present invention is to insure that the air in its passage through the apparatus will always follow a -.path of the same length no matter over which electrode it may pass.

' According to the present invention each v electrode is of substantially right angled trapezoidal shape, and the rods,which serve to lead to or fromthe electrodes electric current of appropriate polarity pass through the projecting substantially triangular porand dielectric sheets.

.tions of the electrodes and serve also to clamp together the assemblage of electrodes Referring to the accompanying drawing Figure l is a face view of one form of electrode. F g. 2 is a sectional plan on the line 2-2 of Fig. t of one form of apparatus constructed inaccordance with this invention showing a different form of electrode. Fig.

3 is a section of the assemblage of electrodes with their interposed dielectric sheets, taken as on line 33 of Fig. 2, and Fig. 4 isa vertical se'ctiontaken on the line 44l of Fig. 2. Fig. 5 is a sectional view modified arrangement.

showing a Fig. 1 shows an electrode of rightangled trapezoidalshape which may con-- veniently be cut from a sheetof wire lgauze (preferably aluminium) without waste, two a such electrodes resulting from an oblique cut across a rectangular sheet. lit is preferred, however, to avoid the sharp corner at a and to stamp out" the sheets as shown The severalelectrodes'are disposed in a series of pairs whereof the two sheets I) and c of a pair, constituting electrodes of opposite polarities, are separated by a dielectric sheet d'. (p referably of mica), those bot one polarity being oppositely arranged as shown in" Figs. 2 and4,.to those a of opposite polarity and alternating with one another and with dielectric sheets (5 in parallel planes throughout the series, so that the electrodes by the dotted modifications and as shown in I overlap one another'throughouta rectangu- I lar area. The die'lectric sheets dare rectanjgular and are'so-much larger than the rectangular area throughout which the electrodes b, c overlap as to leave a margin ex- 5 tendin beyond each edge of said area but beyon three edges only of each electrode,

so that a portion of each electrode 6, 0 projects to theone side or the other as at e, 7",

respectively, Fig. 2, beyond the corresponding lateral edges of the adjacent dielectricv sheets, d, (L These sheets are spaced apart fromrone another by distance pieces 9 extending across the full width of the dielec- *tric sheetsjd. and consisting of" strips" of glass, mica, or other suitable insulatingm a- Y terial. of a thickness slightly greater than the thickness of the sheet of gauze flying between the correspondingly adjacent dielec- I trio-sheets. 1

.The entire assemblage of sheets of gauze and dielectric (with the exception of the top and bottom sheets, Fig; 4) is clamped together by rods h and j which pass through apertures in the projecting portions 6, fof the electrodes b,'(: and through washers 7: (preferably of aluminium) which on the I one hand maintain the 'projecting p'ortions of adjacent electrodes 6, b, or c, c at the correct distance apart, and on the other hand insure good electrical contact betweenthe rod h and the electrodes 6 and between the .rod 7' andthe electrodes'c. The assemblage is housed within a container whereof the side "walls m, m and the end .walls n, n .35 are constituted by a metal casting and are double so as to provide a watertight jacket 0 through which, water'may be passed by 'theinlet and outlet pipe' p, g respectively, and whereof the top 1- and bottom 8 are of insulating material bolted to the metal casting as at t and are provided respectively with an inlet pipe u fortheair tobeozonized'and anputlet pipe 'v.- In order-to main- I tain the strlps vgrin position andto assist in ei maintaining' the whole assemblage in' posi- ',1 tion, blocks w of glass or other insulating naterial are secured by screws :1: to the inner sidewalls of the housing, and in order that the respective-gauze sheets; I) and cmay be supplied with electric alternating current "thef rods h. and j"pasS-throughapertures 1n lhtoft wand bottoin s' respectively and-are fadapted tobe connected in any well known.

' manner with electric cables.

615 Within the housing baflleplates 4 and? are'obli uely disposed as shown in Fig. 4,

i. so that t e air passage to and from the assemblage is graduall decreased in crosssectional area as the istance from theinlet. eoppip'e u or outlet pipe 0 is increased respec- -tivel thus insuring a uniform distribution .of t e volume of I ap aratus.

11 use, only the rectangular overlapping portions of the electrodes, 6 and c are operaair passing through the caused to pass through-the two assemblages insuccession, and it will be obvious that any greater number of such assemblages maybe similarly housed in a single container in order that the air, being-causedto pass through the entire series of assemblages in succession, may be subjected to a cumulative ozonizing I process, it being understood that the respective electrodes of either polarity in the several' assemblages 1 are suitably interconnected electrically; for.

instance the electrodes of adjacent assemblages may be so arranged that a single rod it will serve to lead current of one polarity to the several electrodes 6 of the assemblage shown in Fig. 4, and of a second assemblage placed on the right thereof, the container being suitably extended, while the-rods 7' I I of the two assemblages are electrically interconnected outside the container.

In Fig. 5 is shown a modification which includes additional means for clamping together the entire assemblage of sheetsv of gauze and dielectric. In this form of the invention each electrode 6, c is centrallyv apertured to receive a circular distance piece 1-1of glass, mica, or other insulating material servin to space apart the sheets (1 of dielectric material, which sheets, as well as aglass tube 12 in. which is disposed a'metal .rod 13,provided with a nut 14 whereby the several sheets may be clamped together.

What I claim andsdesire to secureby Letters Patent, is

Yrality of electrodes each consisting of a -'metallic sheet of substantially rightangled trapezoidal shape, the electrodes of a. pair having opposite polarities extending in arallel planes and being separated by as eet of dielectric material, thearrangement and size of the electrodes relatively to the size of the dielectric sheets being. such that a substantially triangular portion of each elec-.

tallic sheet of substantially right-angled angular portions of the electrodes,

trapezoidal shape, the electrodes of "a pair 1. An ozone generatorcomprising a plu- I sembl ageio electrodes and dielectric sheets. 2. An ozone generator comprising a plus rality of electrodes eachconsisting'ofa me- 100" the distance pieces 11' are centrally aper- I tured-to admit the passage therethrough of Leeseeo having oppositepolarities extending in parallel planes and being separated by a sheet of dielectric material, the arrangement and size of the electrodes relatively to the size of the dielectric sheets being such that a substantially triangular portion of each electrode projects in one direction or the other according to its polarity, beyond the corresponding edges of the dielectric sheets, rods serving to lead to or from the electrodes electric current ofappropriate polarity and passing through the projecting substantially triangular portions of the electrodes, and means for clamping together the assemblage of electrodes and dielectric sheets, said means comprising a nut and a centrally arranged rod disposed in a glass tube passing through apertures in the dielectric sheets f and distance pieces of insulating material which are disposed in apertures in the elecsize of the electrodes relatively to the size of the dielectric sheets being such that a substantially triangular portion of each electrode projects in -one direction or the other according to its polarity, beyond the corresponding edges of the dielectric sheets, rods serving to lead to or from the electrodes electric current of appropriate polarity and.

passing through the projectingsubstantially triangular portions of the electrodes, and serving also to clamp together the assemblage or electrodes and dielectric sheets and a container within which said assemblage is housed, said container being provided at its top near one end with an inlet for the air to be ozonized and .provided at its bottom near the other end with an outlet for the ozonized air. 1 4; An ozone generator comprising a plurality of electrodes each consisting of a metallic sheet of substantially right-angled trapezoidal shape, the electrodesof apain having opposite polarities extending in parallel planes and being separated by acsheet of dielectric material, the arrangement and size of the electrodes relatively to the size of the dielectric sheets being such that a substantially triangular portion of each electrode projects in one direction or the other according to its polarity, beyond the corresponding edges of the dielectric sheets, rods serving to'lead to or from the electrodes electric current of appropriate polarity and passing through the projecting substantially triangular portions of the electrodes, means for clamping together the assemblage of electrodes and dielectric sheets,

said means comprising a nut and a centrally arranged rod disposed in a glasstube passing through apertures in the di'electric sheets and distance pieces of insulating material which are disposed in apertures in the electrodes, and a container within which said assemblage is housed, said container being provided at its top near one end with an inlet for the air to be ozonized and rovided at its bottom near the other end with an outlet for the ozonized air.

5. An ozone generator. comprising a plurality of electrodes each consisting of a metallic sheet of substantially right-angled trapezoidal shape, the electrode, of a pair having opposite polarities extending in parallel planes and being separated by a sheet of dielectric material, the arrangement and size of the electrodes relatively to the size of the dielectric sheets being such that a substantially triangular portion of each electrode projects in one direction or the other according to its polarity, beyond the correspondingedges of the dielectric sheets, N

rods serving to lead to or from the electrodes electric current of appropriate p0- larity and passing through the projecting substantially triangular portions of the electrodes, and serving also to clamp together the assemblage of electrodes and di electric sheets and a container within which said assemblage is housed, said container being provided at its top near one end with 6. An ozone 'gener'atorcomprising a plu- -rality of electrodes each consisting of a metallic sheet of substantially right-angled trapezoidal shape, the electrodes of a pair having opposite polarities extending in parallel planes and being separated by a sheet of dielectric material, the arrangement and size of the electrodes relatively to the size of the dielectric sheets being such that a substantially triangular portion of each electrode pro ects ,in one direction or the other according to its polarity, beyond the corresponding edges of the dielectric sheets, rods serving to lead to or from the electrodes electric current ofv appropriate p0'-' larity and passing through the projecting substantially triangular portions of the electrodes, means for clamping together the assemblage of electrodes and h dielectric sulating material which are disposed in apertures in the electrodes and a container Within which said assemblage is housed, said container being provided at its top near one end with an inlet for the air to be ozonized and provided at its bottom near the other end with an outlet for the ozonized air, said container being also provided with obliquely-disposed baflles so that the air passage to and from the assemblage ofelectrodes is gradually decreased in crosssectional area as the distance from the in let pipe or outlet pipe isincreased respectively.

EDWARD LIONEL JOSEPH. 

